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Brain Derived Neurotrophic Factor as a Predictor of Response to Treatment in Bipolar Depression and Mania

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ClinicalTrials.gov Identifier: NCT00879632
Recruitment Status : Unknown
Verified February 2011 by Hospital de Clinicas de Porto Alegre.
Recruitment status was:  Recruiting
First Posted : April 10, 2009
Last Update Posted : February 16, 2011
Information provided by:

Study Description
Brief Summary:
There is sound evidence that quetiapine is effective in the treatment of manic and depressive episodes associated with Bipolar Disorder (BD) (Yatham et al 2006). However, even with the development of effective new treatment options, not all patients respond to treatments available. Biological markers have been investigated as predictors of response to treatment and of remission of symptoms. This would explain in part the individual's differences in the response to treatment, taking into account the genetic variability plus environmental factors influencing specific biological markers. A potential biological marker of response to treatment in BD would be the levels of neurotrophins, as they are, in fact, altered during acute mood episodes (Cunha et al 2006). Among neurotrophins, the Brain-Derived Neurotrophic Factor (BDNF) has been repeatedly and consistently reported to be associated with BD physiopathology (Post 2007). Furthermore, medications that are known to be effective in BD, like lithium and divalproex, increase BDNF levels.

Condition or disease

  Show Detailed Description

Study Design

Study Type : Observational
Estimated Enrollment : 200 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Brain Derived Neurotrophic Factor as a Predictor of Response to Treatment in Bipolar Depression and Mania: 16-weeks Follow-up Study
Study Start Date : March 2009
Estimated Primary Completion Date : September 2011
Estimated Study Completion Date : September 2011

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Bipolar Disorder
U.S. FDA Resources

Groups and Cohorts


Outcome Measures

Primary Outcome Measures :
  1. Hamilton depression raing scale and young mania rating scale [ Time Frame: 16 weeks ]

Secondary Outcome Measures :
  1. Serum BDNF levels as predictor of response to treatment [ Time Frame: 16 weeks ]

Biospecimen Retention:   Samples With DNA

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Bipolar disorders patients during acute mania or depression using treatment as usual

Inclusion Criteria:

  1. Provision of written informed consent
  2. A diagnosis of Bipolar Disorder I by Diagnostic and Statistical Manual of Mental Disorders- Fourth Edition revised (DSM-IV-TR)
  3. Males and females aged 18 to 65 years
  4. Female patients of childbearing potential must be using a reliable method of contraception and have a negative urine human chorionic gonadotrophin (HCG) test at enrolment
  5. Able to understand and comply with the requirements of the study
  6. Currently experiencing a manic, depressive or mixed mood episode, according to DSM-IV-TR. Patients must have a clear DSM-IV diagnosis, confirmed by SCID interview (Structured Clinical Interview for DSM disorders).

Exclusion Criteria:

  1. Pregnancy or lactation
  2. Any DSM-IV Axis I disorder not defined in the inclusion criteria
  3. Patients who, in the opinion of the investigator, pose an imminent risk of suicide or a danger to self or others
  4. Use of any of the following cytochrome P450 3A4 inhibitors in the 14 days preceding enrolment including but not limited to: ketoconazole, itraconazole, fluconazole, erythromycin, clarithromycin, troleandomycin, indinavir, nelfinavir, ritonavir, fluvoxamine and saquinavir
  5. Use of any of the following cytochrome P450 3A4 inducers in the 14 days preceding enrolment including but not limited to: phenytoin, carbamazepine, barbiturates, rifampin, St. John's Wort, and glucocorticoids
  6. Currently on psychotropic medication or administration of a depot antipsychotic injection within one dosing interval (for the depot) before randomisation. Wash-out of minimum of 2 weeks will be required for intake. Fluoxetine use or depot antipsychotics will require 6 weeks of wash-out prior to intake.
  7. Substance or alcohol dependence at enrolment (except dependence in full remission, and except for caffeine or nicotine dependence), as defined by DSM-IV criteria
  8. Opiates, amphetamine, barbiturate, cocaine, cannabis, or hallucinogen abuse by DSM-IV criteria within 4 weeks prior to enrolment
  9. Medical conditions that would affect absorption, distribution, metabolism, or excretion of study treatment
  10. Unstable or inadequately treated medical illness (e.g. congestive heart failure, angina pectoris, hypertension) as judged by the investigator
  11. Involvement in the planning and conduct of the study
  12. Previous enrolment in the present study.
  13. Participation in another drug trial within 4 weeks prior enrolment into this study or longer in accordance with local requirements
  14. A patient with Diabetes Mellitus (DM) fulfilling one of the following criteria:

    • Unstable DM defined as enrolment glycosylated hemoglobin (HbA1c) >8.5%.
    • Admitted to hospital for treatment of DM or DM related illness in past 12 weeks.
    • Not under physician care for DM
    • Physician responsible for patient's DM care has not indicated that patient's DM is controlled.
    • Physician responsible for patient's DM care has not approved patient's participation in the study
    • Has not been on the same dose of oral hypoglycaemic drug(s) and/or diet for the 4 weeks prior to screening. For thiazolidinediones (glitazones) this period should not be less than 8 Weeks.
    • Taking insulin whose daily dose on one occasion in the past 4 weeks has been more than 10% above or below their mean dose in the preceding 4 weeks Note: If a diabetic patient meets one of these criteria, the patient is to be excluded even if the treating physician believes that the patient is stable and can participate in the study.
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00879632

Contact: FLAVIO KAPCZINSKI, MD, PHD 55-51-33598845 flavio.kapczinski@gmail.com
Contact: MARCIA SANTANNA, MD, PHD 55-51-33598846 mksantanna@gmail.com

Hospital de Clinicas de Porto Alegre Recruiting
Porto Alegre, RS, Brazil, 90035003
Contact: MARCIA SANTANNA, MD PHD    55-51-33598846    mksantanna@gmail.com   
Principal Investigator: FLAVIO KAPCZINSKI, MD, PHD         
Sponsors and Collaborators
Hospital de Clinicas de Porto Alegre
National Alliance for Research on Schizophrenia and Depression
Principal Investigator: FLAVIO KAPCZINSKI, MD, PHD Hospital de Clinicas de Porto Alegre
More Information

Responsible Party: Flavio Kapczinski, Hospital de clinicas de porto alegre
ClinicalTrials.gov Identifier: NCT00879632     History of Changes
Other Study ID Numbers: 07456
First Posted: April 10, 2009    Key Record Dates
Last Update Posted: February 16, 2011
Last Verified: February 2011

Additional relevant MeSH terms:
Bipolar Disorder
Behavioral Symptoms
Bipolar and Related Disorders
Mental Disorders